GSE: PS1(7-8)-5: Students demonstrate an understanding of the structure of matter by …
5e explaining that when substances undergo physical changes, the appearance may change but the chemical makeup and chemical properties do not.
5f explaining that when substances undergo chemical changes to form new substances, the properties of the new combinations may be very different from those of the old.
Learning Performance: Students construct a scientific explanation that includes a claim about whether or not the substance is undergoing a physical or chemical change, evidence in showing the differences between the two types of changes, and reasoning that physical changes change their appearances but not their chemical makeup, and chemical changes form new substances with new properties.
Specific Rubric
Component
Level 0
Level 1
Level 2
Claim
States that physical changes do change the chemical makeup, and/or vice versa.
Vague statement, like “physical changes/chemical changes occur.”
Explicitly states “physical changes change the appearance of the substance but not the chemical makeup.”
Evidence
Provides inappropriate data like “ripping paper is a chemical change” or provides vague evidence like “a change is happening.”
Provides a few pieces of evidence that is fitting of the data, as well a few inappropriate pieces of evidence, like “physical changes include paper ripping and burning paper.”
Provides all correct pieces of evidence, like “ripping paper is a physical change and burning paper is a chemical change.”
Reasoning
Provides an inappropriate reasoning statement like, “a physical change is happening when you burn a piece of paper because the paper is changing.”
Repeats evidence or provides incomplete generalization about physical and chemical changes.
Includes detailed facts about each example and why they are that type of change, like “a physical change is happening when you rip a piece of paper because you can still tell it is a piece of paper, though it is in pieces.”
A misconception that might occur is the differences between the two types of changes. Students may be confused whether a change is physical or chemical.
Formative feedback: I could provide this by writing corrections of those misconceptions on their worksheets and help them better understand what they did wrong, as well as recognize things they did correctly.
5e explaining that when substances undergo physical changes, the appearance may change but the chemical makeup and chemical properties do not.
5f explaining that when substances undergo chemical changes to form new substances, the properties of the new combinations may be very different from those of the old.
https://riscienceteachers.wikispaces.com/PS1+%287-8%29+-+5
Learning Performance: Students construct a scientific explanation that includes a claim about whether or not the substance is undergoing a physical or chemical change, evidence in showing the differences between the two types of changes, and reasoning that physical changes change their appearances but not their chemical makeup, and chemical changes form new substances with new properties.
Specific Rubric
A misconception that might occur is the differences between the two types of changes. Students may be confused whether a change is physical or chemical.
Formative feedback: I could provide this by writing corrections of those misconceptions on their worksheets and help them better understand what they did wrong, as well as recognize things they did correctly.